What a normal person would do?

During a visit to the mental asylum, a visitor asked the Director what is the criteria that defines a patient to be institutionalized.

"Well," said the Director, "we fill up a bathtub, we offer a teaspoon, a teacup, and a bucket to the patient and ask the patient to empty the bathtub."

1. Would you use the spoon?
2. Would you use the tea cup?
3. Would you use the bucket?

"Oh, I understand," said the visitor. "A normal person would choose the bucket, as it is larger than the spoon and the cup."

"No" said the director - A normal person would........

"A normal person would pull the plug and let the water flow out"